CVE-2023-43826: Integer Overflow or Wraparound

December 19, 2023 (updated December 22, 2023)

Apache Guacamole 1.5.3 and older do not consistently ensure that values received from a VNC server will not result in integer overflow. If a user connects to a malicious or compromised VNC server, specially-crafted data could result in memory corruption, possibly allowing arbitrary code to be executed with the privileges of the running guacd process.

Users are recommended to upgrade to version 1.5.4, which fixes this issue.

References

www.openwall.com/lists/oss-security/2023/12/19/4
lists.apache.org/thread/23gzwftpfgtq97tj6ttmbclry53kmwv6
nvd.nist.gov/vuln/detail/CVE-2023-43826

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